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Let-ters Patent No. 66,998, dated 23, 1867. i

l IMPROVEMENT IN PEEDv-WATERVIIEATERS.

To WHoM I T MAY coNcERN:

Be it known that I, EDWIN RfSrILWI-JLL, of Dayton, in the county ofhMontgomer-y, and State of Ohio,

have invented an Apparat-us for'Iurifying Water for Steam-Boilers, and I do'hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, makingpart of this specification, in which- Figure 1 is a longitudinal section, taken 'centrally through the purifier.

Figure 2 is across-section through the same, taken at the pointy y in g. 1.

Figure 3 is a View of one of the shelves over which the water flows.

Figure 4 is a view of a cover which may be used upon each shelf.

Similar letters of reference indicate corresponding parts in the several figures.

This invention relates to a novel apparatus which isdesigned for purifying water by the action of'live steam upouit, so as to free it from sediment and the salts which may-be held in solution before it enters the boiler. The object of my invention is to eifeet -a separation ofmineral matters and other substances in water which is to be used in steam-boilers, by the introduction ofthe water within a chamberwhich is in direct communication with the steam-chamber of the boiler, and which is provided with a series of shelves, arranged and so constructed as to cause the water to flow horizontally over them in a thin sheet or stream, and to be subjected thoroughly to the action ofthe live steam, said chamber being also provided with a filtering medium, which is so arranged that after the water has circulated over the shelves, and has been deprived of its mineral matters, it will then be filtered and purified of its other objectionable substances, sc that, before entering the boiler, the water will be practically pure, as will be hereinafter described:

To enable others skilled in the art to understand my invention, I will describe its construction and operation.

In the accompanying drawing,A represents a' strong vessel, which may be made ofthe cylindrical form shown in th'e drawings, or of any other suitable form, and which has Vits ends closed' steam-tight by means of the heads B B shown in g. 1. This vessel may be connected to the lower part of the boiler or mud-well thereof by means of a pipe connected at d to the escape-opening for the pure water, audit may be connected to the upperportion of the boiler by means of a pipe, a, so as to receive live steam direct from the boiler. The vessel A should be arranged in or nearly vina horizontal position and supplied with water 4through the feed pipe b, having'a shallowvessel or h-ood, b', upon its inner end, over the sides or against the bottom of which the water flows in a. thin sheet, as represented in figs. 1 and 2. Directly beneath the vessel or hood b is a shelf or pan, c,

having a. corrugated bottom, which receives the water flowing from said vessel and conducts it toward the opposite end of the vessel A, where it flows through a hole, c', through the bottom of the pan or shelf c, and falls upon va corresponding shelf, e, placed beneath it. A great number of these shallow corrugated'bottom shelves or pans may be arranged one below the other, and'constructed with holes c through their ends, so that the water will flow over an extensive surface and be thoroughly exposed to the action of thesteain contained in the vessel A before it flows upon the ltering'substance contained in a chamber, j',V which is at the bottom of this vessel. The filtering medium may consist of straw or other suitable material, confined in place 'by means of the rack or grating and the perforatedfend piece, as shown in fig. 1. After percolating through the ilterer the Water then ows over the internal elevated portion of the pipe d and escapes through this pipe into the boiler. The shelves c c are applied within the cylinder A, so that they-will slide freely in and out, and muy be readily removed, when it is desired to clean them, by removing one of the heads of sai-d cylinder. In gs. 4 and 5 I have represented a cover or lid which may be'applied lto each one of the shelvesc for. the purpose of preventing the water from being thrown over the sides of Ithe shelves. The depressions whichi'are made in these shelves, c, are used for exposing a large amount of heating surface to the water owing over the shelves.

I am-aware that a patent was granted to A. Granger, January 26, 1864, for a feed-water heater for steam-boilers, wherein 4he describes an arrangement of basins within a vertical vessel which is in direct communication with the steam-boiler, over or through which basins the feed-Water flows, and is exposed in the form of drops or small streams to the action of steam, which, it is alleged, effects a. speedy purification of the water. I am also aware that George Hcsccoster and Isaac Stephens received a patent September 18, 1866, for a feedwater heater and purifier, in which steam is employed as the means of purification. I do not make claim tothe contrivances mentioned in said Letters Patent, and believe that my invention possesses novelty and advantages over such contrivances. ln practicc, the vessel shown in figs. 1 and 2, and lettered b', may be inverted, so as toform a. cztp or hood over the pipe b, thereby concentrating the Water and delivering the same upon therpan c, l directly beneath, instead of spreading the water, :is stated. i That I claim as new, and desire to secu're by Letters Pnt( at, is- 4 1: The feed-water purifier, having its filtering-chamber f and its cap or hood b arranged in the relation to corrugated pans or corrugated plates c, and to'inlet and outlet pipes ad, substantially as and for the purpose f set forth.

2. The filteringechnmber, constructed and arranged as shown and described, within the horizontal chamber A. B, which has its outlet dtarranged as sh'own.

EDWIN R. STILWELL.

Witnesses: q

E.- S. YOUNG, G. NELSON BxEncE. 

